Puget Sound is the 2nd largest estuary in the United States (Chesapeake Bay is the largest). The Puget Sound drainage basin is 13,700 square miles and includes 13 U.S. counties plus one in Canada. The basin has three physiographic areas including the Olympic Mountains, the Puget Lowlands, and the Cascade Range (see Figure 1).
If you used the How's My Waterway - Home (epa.gov) tool, you now have some idea of where your watershed sits in the overall drainage basin. One thing you can count on is that water flows downhill! It travels from our neighborhood ditches and stormwater ponds into our local creeks, rivers, and lakes and eventually outfalls to Puget Sound.
|Figure 1. Streams and rivers drain three physiographic provinces in the Puget Sound Basin (Black and Silkey, 1998). - from the NAWQA - Water Quality in the Puget Sound Basin.|
"More than 60 percent of water pollution comes from things like cars leaking oil, fertilizers and pesticides from farms and gardens, failing septic tanks, pet waste, and fuel spills from recreational boating."